Yeah, I was talking to Mojo about the design of it the other day. I first thought that the face plate could be fixed to the dome to make the two parts one lid after the kit is done. Though Mojo came up with an idea of using the inner piece from a hard hat, the adjustable part that fits your head? To use that and fix it to the faceplate so you'd be able to keep the dome seperate from the face plate. Then once you have the face plate on, you can just slide the dome down over it???
Another idea that we haven't fully explored yet but I may give that a go when I get a cast back.